删除记录前检查Laravel 8中是否存在hasMany关系

Question

我试图在删除之前检查关系是否存在。 我在网上看到了很多关于此的其他帖子，但似乎无法让它发挥作用——当我点击删除时，它会忽略我的 @if 语句并删除记录。

型号/工作订单.php

...
public function continuations()
    {
        return $this->hasMany(Continuation::class);
    }
...

型号/续。php

...
public function workorder()
    {
        return $this->belongsTo(Workorder::class, 'workorder_id');
    }
...

工单/index.blade.php

...
  <td class="pr-6">
        <a wire:click="deleteWorkorder({{$workorder->id}})"
           role="menuitem">
        </a>
  </td>
...

工单/索引.php

...
public function deleteWorkorder($id)
    {
        $record = Workorder::find($id);
        $conExists = Continuation::where('workorder_id', $record->id)->exists();

        if($conExists){
            session()->flash('failed-message', 'You can\'t delete a workorder that has a Continuation');
            return;
        }
        $record->delete();
        session()->flash('success-message', 'Workorder Deleted Successfully');

    }
...

Answer 1

通过使用 isNotEmpty() 尝试类似的事情

$workorder= workorder::find($request->id);
            if ($workorder->continuations->isNotEmpty()) {
                return session()->flash('failed-message', 'You can\'t delete a workorder that has a Continuation');
            }